The Śūraṅgama Sūtra, Volume 10: Integration of Delusions

to your thoughts and deliberations, your material body is driven. The body is not of the same category as your thoughts; why then does your body follow the commands of your thoughts? Within the mind, the various grasping of appearances occurs; as the mind gives rise to forms, it grasps them, corresponding to the thoughts. When awake, it is the thinking mind; when asleep, it becomes the various dreams. Thus, your thoughts stir your deluded emotions, which is called the pervasive third delusion.

Explanation: Due to your thoughts and deliberations, your material body is driven. The body and your mental thoughts are not of the same kind, yet why is your body commanded by your thoughts? The mind grasps various appearances of phenomena internally, causing the forms to appear in the mind, aligning with what is thought. When awake, it is the thoughts in the mind; when asleep, it becomes the various dreams. Thus, your thoughts stir your own deluded emotions, called the pervasive third delusion. This explains that the skandha of perception (想阴) is the pervasive delusion.